thread_condition_variable.h

//
// Copyright (c) 2014 Limit Point Systems, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

// Interface for class THREAD_CONDITION_VARIABLE

#ifndef THREAD_CONDITION_VARIABLE_H
#define THREAD_CONDITION_VARIABLE_H

#ifndef SHEAF_DLL_SPEC_H
#include "SheafSystem/sheaf_dll_spec.h"
#endif

#ifdef _PTHREADS
#include "SheafSystem/pthread.h"

namespace sheaf
{
  
class SHEAF_DLL_SPEC thread_condition_variable
{

public:

  // queries:

  bool  invariant() const;

  // actions:

  void  broadcast();

  void  lock_mutex();

  void  signal();

  void  timedwait(timespec *xtime);

  void  unlock_mutex();

  void  wait();

  // constructors:

  thread_condition_variable();

  ~thread_condition_variable();

private:

  // data:

  pthread_mutex_t     pthread_mutex;
  pthread_cond_t      pthread_cond;

};
 
} //namespace sheaf

#endif // ifdef _PTHREADS

#endif // ifndef THREAD_CONDITION_VARIABLE_H